the LS series motors are always under-rated anyway..I'm going to say somewhere around 445hp for the 2012 SS and maybe an increase for the 2012 Camaro 3.6L..I'm not sure if the HP increase will be worth what the MSRP increase will be considering you can probably get just as much HP out your current SS by installing a CAI,exhaust and a Tune..dropping some weight is always good too..

the 2012 Z/28 will never get a 600HP S/C motor unless Chevy plans on selling them at around $70,000.. I'm thinking the 2012 Z/28 will be in the 500-515hp range priced around $55,000(nicely equipped)..that is if it really gets the Supercharged Motor..